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Ubuntu 20.04 LTS / 22.04 LTS / 23.04 / 23.10 : HTML Tidy vulnerability (USN-6483-1)

critical Nessus Plugin ID 185779

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 20.04 LTS / 22.04 LTS / 23.04 / 23.10 host has packages installed that are affected by a vulnerability as referenced in the USN-6483-1 advisory.

 - An issue in HTACG HTML Tidy v5.7.28 allows attacker to execute arbitrary code via the -g option of the CleanNode() function in gdoc.c. (CVE-2021-33391)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected libtidy-dev, libtidy5deb1 and / or tidy packages.

See Also

https://ubuntu.com/security/notices/USN-6483-1

Plugin Details

Severity: Critical

ID: 185779

File Name: ubuntu_USN-6483-1.nasl

Version: 1.0

Type: local

Agent: unix

Published: 11/15/2023

Updated: 11/15/2023

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2021-33391

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:23.04, cpe:/o:canonical:ubuntu_linux:23.10, p-cpe:/a:canonical:ubuntu_linux:libtidy-dev, p-cpe:/a:canonical:ubuntu_linux:libtidy5deb1, p-cpe:/a:canonical:ubuntu_linux:tidy

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/15/2023

Vulnerability Publication Date: 2/17/2023

Reference Information

CVE: CVE-2021-33391

USN: 6483-1